以前期研究工艺参数为基础,利用超声-电沉积的方法制备Ni-TiN纳米镀层。采用X射线衍射仪（XRD）、高分辨电子显微镜（HRTEM）及纳米压痕仪（NI）对Ni-TiN纳米镀层的组分、显微组织和显微硬度进行观察和分析;利用AR模型对Ni-TiN纳米镀层的显微硬度进行预测。结果表明,在Ni-TiN纳米镀层中,存在Ni和TiN两相;当超声功率为200W、TiN浓度为4g/L时,镀层中镍晶粒和TiN粒子的平均粒径分别为50和30nm。利用AR模型可以对Ni-TiN纳米镀层的显微硬度进行预测,且预测结果的最大相对误差为3.22%。
The Ni-TiN nanocoatings were deposited by ultrasonic-electrodeposition method,based on the previous research process parameters.The composition,microstructure and micro hardness of Ni-TiN nanocoatings were studied by the X-ray diffraction analysis（XRD）,high respective transmission electron microscope（HRTEM） and nano indenter（NI）.And the microhardnesses of the Ni-TiN nanocoatings were forecasted by AR model.The results show that there is Ni and TiN phase in Ni-TiN nanocoatings,and the average diameters of Ni grains and TiN particles are 50 and 30nm,respectively.The AR model can be used for forecasting the microhardnesses of the Ni-TiN nanocoatings,and the maximum relative error of the predicted value is 3.22%.
参考文献
| [1] | Xia, FF;Wu, MH;Wang, F;Jia, ZY;Wang, AL .Nanocomposite Ni-TiN coatings prepared by ultrasonic electrodeposition[J].Current applied physics: the official journal of the Korean Physical Society,2009(1):44-47. |
| [2] | Aksasse B.;Radouane L. .Two-dimensional autoregressive (2-D AR) model order estimation[J].IEEE Transactions on Signal Processing: A publication of the IEEE Signal Processing Society,1999(7):2072-2077. |
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